Sprinkler with height adjustment

Abstract

A sprinkler height adjustment mechanism is described that can be used to increase the height of a top cover and a top of the riser relative to the sprinkler body. The height adjustment mechanism is particularly useful for sprinklers with compartments having removable tops, however, a similar design can also be adapted for sprinklers without compartments (e.g., components that connect to a sprinkler flange or the sprinkler riser).

What is claimed is: 
     
       1. A height adjustment mechanism for an irrigation sprinkler, comprising:
 a first spacer comprising a main body ring shaped to removably engage against a top region of an outer wall of said irrigation sprinkler and to connect to 1) a top cover of said irrigation sprinkler, or 2) to a second spacer; the first spacer further comprising a riser ring supported in a concentric and offset position within said main body ring, and being sized and positioned to allow a riser assembly of said sprinkler to move vertically therethrough. 
 
     
     
       2. The height adjustment mechanism of  claim 1 , wherein said riser ring prevents a top surface of said riser assembly from passing through it. 
     
     
       3. The height adjustment mechanism of  claim 1 , further comprising a knob adapter shaped to engage a knob on a top of said irrigation sprinkler; said knob further engaging with said first spacer. 
     
     
       4. The height adjustment mechanism of  claim 1 , further comprising a first set of screws having a first length and a second set of screws having a second length. 
     
     
       5. The height adjustment mechanism of  claim 1 , wherein said main body ring is configured to hold a screw horizontally. 
     
     
       6. The height adjustment mechanism of  claim 2 , wherein said riser ring further comprises a plurality of vertical fins. 
     
     
       7. The height adjustment mechanism of  claim 1 , further comprising a second spacer shaped to removably engage with a top region of said first spacer. 
     
     
       8. The height adjustment mechanism of  claim 7 , further comprising a third spacer shaped to removably engage with a top region of said second spacer. 
     
     
       9. A height adjustment kit for an irrigation sprinkler, comprising:
 a first spacer configured and shaped to removably engage with a top region of said irrigation sprinkler and with a top cover of said irrigation sprinkler; said first spacer comprising 1) a main body ring having a first diameter and free space within said first diameter, and 2) a riser ring fixed concentrically within said free space of said main body ring and having a second diameter that is smaller than said first diameter; and, a second spacer shaped to removably engage with a top region of said first spacer. 
 
     
     
       10. The height adjustment kit of  claim 9 , further comprising a first set of screws having a first length and a second set of screws having a second length that is longer than said first length. 
     
     
       11. The height adjustment kit of  claim 10 , further comprising a third spacer shaped to removably engage with a top region of said second spacer. 
     
     
       12. The height adjustment kit of  claim 11 , further comprising a plurality of knob adapters. 
     
     
       13. The height adjustment kit of  claim 12 , wherein said height adjustment kit is configured to connect to an irrigation sprinkler with a top-accessible compartment. 
     
     
       14. A height adjustment kit for an irrigation sprinkler, comprising:
 a first spacer shaped to removably engage with a top region of said irrigation sprinkler; and, 
 a connection mechanism that removably connects said first spacer to said irrigation sprinkler; wherein the connection mechanism comprises a first set of screws having a first length, and, a second set of screws having a second length that is longer than said first length.